JEEP

08-036-26

2026-01-31 · NHTSA 11028230

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Flash: Battery Pack Control Module (BPCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):** ● **P0B28-00 - Hybrid/EV Battery “B” Voltage Unstable. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0AA1 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0C78 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6 - Hybrid/EV Battery Charging Current High. ● P0B24 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E - Hybrid/EV Battery State Of Health Failed.** ● P1A21-00 - HV Battery Contactor Control Sequence Incorrect. ● P0B3E-00 - Hybrid/EV Battery Voltage Sense 1 Circuit High. ● P0607-00 - ECU Internal Performance. ● P1E1B-00 - Hybrid/EV Battery Side Voltage System Isolation. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit Stuck Closed. ● P1C00-00 - Hybrid/EV Battery Voltage Sense 1 Out Of Range Low. ● P1C01-00 - Hybrid/EV Battery Voltage Sense 1 Out Of Range High. ● P1A9B-00 - Hybrid/EV Battery Temperature Sensor 1 Out Of Range High. ● P0BBD-00 - Hybrid Battery Pack Voltage Variation Exceeded Limit. ● P167B-00 - Controlled System Shutdown. ● U1885-00 - Battery Energy Control Module Lost Communication With HCP. ● P0EDD-00 - Hybrid/EV Battery Pack B Deterioration. ● U0111 - Lost Communication With Hybrid Battery Pack Sensor Module. ● P0CA7-00 - Hybrid/EV Battery Discharging Current High. ● P1A0C-00 - Battery Energy Control Module System Voltage Low. J08 FSAR-TSB-6892 -2- **Customers may also comment on the following: ● Vehicle does not start. NOTE: The no start condition is accompanied with the following DTCs: P0DAB-00, P0607-00, P0AA1, P0AA4, P0C78, P0CA6, P0B24 and/or P1C5E. P0B28 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.** This bulletin involves reprogramming the BPCM with the latest available software. NOTE: Additional module flashes are requ

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.